Later this year, Beijing will start the country’s first driverless(无人驾驶 ) subway trains. The Yanfang Line-connecting part of Fangshan district center-will be the first to try out driverless technology.
According to the experts(专家) in public transportation, the new trains will make the underground railway system(系统) better. They will have an upgraded(升级的)operating system. They will reach 80km per hour and carry more than 1,200 passengers.
The development of driverless technology is opening up in other areas of transport(交通工具). Driverless cars have been a dream for many people. And in the past few years, big car companies, including Volkswagen and Toyota, have made lots of studies while they are competing with other companies, such as Google.
But with not racks(轨道) to run on, how will driverless cars be safe? This technology is made up of many sensors(传感器) including radar and GPS. This gives the car an exact position in the world, as well as what’s around it. It also allows the car to see moving objects(目标), like other cars and people.
Pilot-free planes have also become a hot technology topic. Yet while these new kinds of technology are seen as better and safer, they do have problems. They cannot work at all without the help of computers. Just like humans, computers make mistakes-although less often. And like much of technology, it makes many workers lose their jobs. What will happen to the future bus drivers and pilots?
1.Will Beijing start the country’s first driverless subway trains?
2.How many passengers will the driverless subway train carry?
3.What did the big companies do about the driverless technology?
4.Why will driverless cars be safe?
5.What does the writer mainly tell us in the last paragraph?
Australia is in the southern part of the earth, one of the seven continents in the world with an area of nearly 7.7 million square kilometers. It’s also the world’s sixth l1.nation after Russia, Canada, China, the US and Brazil. Canberra is its c2..
Australia is like the US in lots of ways. The first people there were aborigines(土著居民). Most people live in or near cities. They speak nearly the s3. English. Though there are some very different words that Australians use. For example, they say “G day” i4. of good day or hello in American English.
The weather in Australia is warm and p5.. The warmest months in Australia happen when people are having winter in America. A special point is that few Australians live in the middle part of the country because there they cannot get very much r6.and it is very dry. The Great Barrier Reef(大堡礁), which is m7. up of coral and algae(海藻), is in Australia. It is s8. a good sightseeing that it attracts a number of visitors, for it’s the world’s biggest living coral island, about 1250 miles long. Sports in Australia seem quite popular. Cricket, the national sport, has many f9. as well as Australian Rules Football. The boomerang is also pretty famous.
Australia is really a great country which is w10. visiting! Seeing is believing! So let’s enjoy it!
请根据要求改写下列句子,每空一词。
1.The first computers were built in the 1940s. (对划线部分提问)
_______ ________ the frst computers built?
2. Shelley was so lucky that she won a free trip to Hong Kong. (改为简单句)
Shelley was lucky _____ to ______ a free trip to Hong Kong.
3.Mary asked the teacher, “Does the sun go down in the west every day?” (改为宾语从句)
Mary asked the teacher _____ the sun ______down in the west every day?
4.They cancelled the concert because of the bad weather. (改为被动语态)
The concert_______ _______ because of the bad weather.
5.I won’t go to the party if I’m not invited. (保持句意基本不变)
I won’t go to the party_______ _______ invited.
I will never forget the tenth summer of childhood with my grandfather in western Norway at the mountain farm where my mother was born. As a boy ,I always thought people simply bought whatever they need. Whether Grandfather knew this, I don’t know. One day he said, ”Come, I have something for you.”
I followed him to a workroom. “You should have a toy boat. You can sail it at Storvassdal.” He said. Great, I thought,looking around for the boat. But there was none.
Grandfather pointed to a block of wood. “The boat is in there,” he said. Then he handed me some tools and showed me how to use them properly. “It’ll be a fine boat,and you’ll make it with your own hands,” he said,”No one can give you what you do for yourself.” The words rang in my head as I worked. Finished the boat. It wasn’t much to look at ,but I was poud. Then I sailed it at Storvassdal.
We had to return to America. “You cannot bring that boat home with you,” my mother said. We already had too much baggage. Feeling sad, I hid my boat under a big rock at Storvassdal.
I said good-bye to Grandfather, not knowing I would never see him again.
In 1964, I went to Storvassdal with my parents and my wife and children. To my surprise,for 34 years my treasure stayed here,waiting for my return. I felt we three were togethet again although my grandfather had died 22 years before.
I carved”1930”and”1964” on its side and put it back.
I returned to the lake in 1968,1971,1977 and 1988. Each time I had the boat and carved the year,my grandfather seemed near.
My last trip to Storvassdal was in 1991. I brought my granddaughters: Catherine,13; Claire,12. I hoped they would understand the importance of the little boat and its simple message. At Storvassdal, Claire said softly, ‘Grandpa,someday I’ll come back.’ She added,”And I’ll bring my children.”
1.What lesson did the writer’s grandfather probably teach him?
A.Boys should have a toy boat at childhood.
B.People can simply buy whatever they need.
C.Boys should learn to make a boat out of wood.
D.No one can give you what you do for yourself.
2.The underline words”we three” in Paragraph 6 refer to__________
A.Mother,the boat and me.
B.Grandfather,the boat and me.
C.Catherine,Claire and me.
D.Grandfather , Mother and me.
3.According to the passage,we can infer（推断） that _____________
A.The writer’s mother was born in western Norway
B.The writer’s grandfather died in 1930
C.The boat took me back to Norway four times
D.Claire understood the meaning of the boat
4.What’s the best titile of the passage?
A.The Little Boat That Sailed Through Time
B.The Little Boat And My Wife
C.The Little Boat That Sailed At Storvassdal
D.The Little Boat And My Parents
In the science film Sunshine, an astronaut named Mace must leave his spacecraft without a protective suit for 15 seconds. He makes it through with the damage(损害) as a result of being very cold. Have you ever wondered what might happen to your body in space without a spacesuit?
On Earth, our atmosphere (air) protects us from the sun’s harmful UV rays, controls temperatures and also keeps a nice atmosphere pressure. The vacuum (真空) of space, however, is full of dangers.
One of the serious dangers Mace might face in outer space is ebullism (体液沸腾). The pressure in the vacuum of space is so low that the boiling point of the fluids (液体) in your body drops below the body’s normal temperature (37℃), which results in the formation of gas bubbles in your fluids that can really make you feel aching.
Another serious danger is the lack of oxygen. After around 15 seconds, your body would have used up all pf the oxygen in your body and you’d lose consciousness (意识). Some of you may be thinking “But I can hold my breath for minutes!?” The situation in space is a little different than here on Earth because of the lack of outside pressure, and if you held your breath in space without a suit you’d be in a big trouble. This is because any remaining air would rapidly enlarge, breaking the lungs.
After losing consciousness, you’ll probably last a couple of minutes at most before you die. Of course, there’s all that awful UV from the Sun which is going to give you serious sun burn, likely leading to cancer.
Is little damage for coldness a reasonable result of Sunshine’s suit less spacewalk? Actually it’s extremely cold in space, but astronauts wouldn’t immediately freeze because heat leaves the body very slowly in a vacuum. Therefore, the cold wouldn’t cause Mace too much harm in just 15 seconds, even if he faced the very lowest temperatures in space. The more likely damage would be caused from the enlargement and breaking of the skin’s small blood vessels (血管).
Anyway, obviously it’s never a good idea to go into space without some kind of protection. But don’t lose hope because you are probably saved with timely help before you die, so keep up!
1.Where can we read the passage?
A.In a magazine. B.In a diary.
C.In a movie poster. D.In a how-to book.
2.What does the writer think of the air or the vacuum?
A.The vacuum helps astronauts walking and Waving in space.
B.The air supplies living protection and temperature control.
C.The air brings people serious problems sometimes on Earth.
D.The pressure of vacuum in space increases the boiling point.
3.What is the purpose of writing this passage?
A.To encourage readers to watch the film Sunshine.
B.To show the readers many serious air problems.
C.To discuss the causes of cancer from the sunburn.
D.To explain the unreasonable damage in the film.
4.What is the best title of the passage?
A.Keep Alive in Space B.Walking Freely in Space
C.Without a Spacesuit D.Coldness Damage in Space
Welcome to our school. You can do a lot of things here. Come and join us.
Timetable | |
Sunday 8:30-11:30 Personal (个人的) Inventions You can see many inventions by the students; you may also bring your own inventions. | Monday 19:00-21:00 Space and Man Dr. Thomas West If you want to know more about the universe. |
Wednesday 19:30-21:00 Modern Medicine Mrs. Lucy Green Would you like to know medical science? | Friday 18:30-21:00 Computer Science Mr. Harry Morison from Harvard University. Learn to use Windows XP. |
1.You may have a chance to introduce your inventions on ________.
A.Sunday B.Monday C.Wednesday D.Thursday
2.The person who teaches Computer Science is from ________.
A.Canada B.Australia C.America D.China
3.You may learn something about a disease called TB from ________.
A.Dr. West B.Mr. Morison C.Mrs. Green D.Mr. Smith
